适用于iOS的计时器1毫秒分辨率

Question

In my app I have an object(Car image) that needs to move on the screen. I need to schedule myFunction every 1ms if possible. I read apple documentation and I understood that NSTimer resolution is limited to 50-100ms, which is not enough for my use case (moving an object quickly on the screen).

What could be the alternatives to the NSTimer object?

Thanks in advance.

Answer 1

I think you may be trying to show things at too fine a time rate. The screen doesn't refresh that fast, so having a timer fire with that frequency isn't going to help.

For timing graphics have a look at the CADisplayLink class which calls a selector when the screen needs to be refreshed. ie A timer that is based on the display refresh rate.